Integration by parts for space-time factors. #
theorem
CKN.integral_mul_spatialPartial_eq_neg_spatialPartial_mul
{F G : Foundation.Parabolic.Vec3 × ℝ → ℝ}
(hF : ContDiff ℝ (↑⊤) F)
(hG : ContDiff ℝ (↑⊤) G)
(hGcompact : HasCompactSupport G)
(i : Fin 3)
:
∫ (z : Foundation.Parabolic.Vec3 × ℝ), F z * spatialPartial
(have this := G;
this)
i z = -∫ (z : Foundation.Parabolic.Vec3 × ℝ), spatialPartial
(have this := F;
this)
i z * G z
theorem
CKN.integral_mul_timePartial_eq_neg_timePartial_mul
{F G : Foundation.Parabolic.Vec3 × ℝ → ℝ}
(hF : ContDiff ℝ (↑⊤) F)
(hG : ContDiff ℝ (↑⊤) G)
(hGcompact : HasCompactSupport G)
:
∫ (z : Foundation.Parabolic.Vec3 × ℝ), F z * timePartial
(have this := G;
this)
z = -∫ (z : Foundation.Parabolic.Vec3 × ℝ), timePartial
(have this := F;
this)
z * G z